Teleprinter receiver device



H. WUSTENEY TELEPRINTER RECEIVER DEVICE Sept. 9, 1952 1 Filed Oct 5, 1950 2 SHEETS-SHEET l Inventor: xj erberyf fl 'gzezzgy H. WUSTENEY TELEFRINTER RECEIVER DEVICE Sept. 9, 1952 Filed Oct. 5, 1950 v 2 SHEETS-SHEET 2 Patented Sept. 9, 1952 1 UNITED STATES PATENT,-.'%O2FF-ICE TELEPRINTER REGEIVER DEVICE ,Herbert Wiisteney, Kladow,- Germany; assignor to .Siemens & iHalske, Aktiengesellschaft, Sie- .Vmensstadtrnear .Berliminermany, a-German corporation sApplicationOctober 5, 1950,f-SerialtNo. 188;6114

llInlGennanylNovember 12, 1948 ;9"'Claims. (015178- 33) 1 2 v This invention relates to remotelyucontrolled I .with, reference to thelaccompanyi n vjdr a qmg signal receiver apparatus, and particularly to Inthese drawings,

ateleprinters operating 1 in accordance-with the 3513. :1 shows in schematic manner essential start-.stop'principle. parts. for accomplishing the objects of .the ,in-

Mtg-brief reviewof thegpertinent prior-:artzisren- -.5 mention in a .teleprintertoperating inaccordance :dered:.below to furnish1a=basis .for.,a.better uni-With the five-cstepjalpha'bet, andillustrates in diderstanding of the invention. :agrammaticvsi'de viewgparticularly the structure Initeleprinters operating in accordance with of the'partsrequired for obtaining'theselective :thestart-stop principle, the switching-inaof .the operationslgoverned by the armature having .a 'apparatusl-andqthesensing .of the individual (5 .10 smallworkinglstroke;

or 6 symbol steps .is initiatedbymagnets which vqFigvfzrepresentsinldiagrammaticmanner the aare remotely controlled over the line. The restructures of the cams which arearrzmged upon lease of the; control shaft serving ,the switchingihBiCOIllilOl shaft ior governing ,thegselectiveopin of the receiver :apparatus requires -considererations; able energy; while smallparts and relativelysmall Fig. ,3,is .a diagrammaticlen'd view of;the;ar- .energiesare desired! for-executing vtheairapid mo- .rangement-hshown.in;Eig., 1sand 11.011813111313116 controlsof the selective steps, that Fig. 4 illustrates diagrammatically vithe parts is, mine sensing of,the.=individual:symbol:steps. .con-trolledbythe armaturelhaving a large Work- ;Known teleprinters operating :inraccordance v-in gmstroke and rserving .,for the release of the with the ,five-step alphabet are provided withwa receiver: shaft intocoperatingposition. receiver magnet having five parmatureat-vone for 7 Like (pants are .numberedalike throughoutthe serving in thezsensing of reach selective step. drawings. :pKnownlelements and details ,will'be The armaturestare by magnetic meansmlaced in referred :to .only to the extent required,: 'for gexoperative gpositioniin definite succession ,for the ,plainingithe. invention. sensing of nthesindividual current steps. While The receivermagnetvisrindicated in,.the.drawsuch, receiver devices operate quite;reliab1y,.they ingsi-by ,numeral. l Numeral 2 (Fig. 4). showstthe require a great number of individual parts and iarmaturehavingallalfge working strokeifor con- -.veryaccuratesadjustments. trolling .the release of the it receiver. .ishaft into In other -known tapparatus lof this typethere .operating position. 'The-armaturehavingasmall 1ST provided only one-armature with -.means .for 30 working stroke and governing the selection opdetermining the;energyrand the working stroke erationslisviindicated=ath3 (Fig. 1). jThetwo ar- Lfor the release, sthatv is, for :the ;switching?in ,of .lmatures 1,2 vand I3 .arepivotal1y1mounted on the theapparatus, thusirequii ing-very considerable common shaft. 4. The armature] is provided working energy. Apparatus:ofgthiskindzareavery Withca strong vrestoring spring '5, while,the renoisy in operation andAare-subiected .to,a: great 5 storing spring 6 for ether armature 3 ,is considdeal oflwearandztear. V erabl ylweaker. Upontthe armature 2 is. .pr,ovid'ed The, object 10f *theiinvention' is .toaprovidelama the rlevertarm .1 carrying, at its ,upper end a;1ockceiver device of very simple "construction ihavring-rearmflmandwatiitsmlowler end an. extension ,9, ing a small number of parts and improved.-::eleclthellatterbeingoperativewto pressthe ar t e trio-sensitivity. 4o I-LagainstNthetcore of the .Areceiver magnet .I at

This Object his realized by equipping t .the-conclusionrofmeachrevolution.of;the;reoeiver .ceiverx-magnet with two .armatures,=: one r-having eshafvt ,28Hunderhthevcontrol ofrthe cam .III which la relatively large stroke t-ior lithe releaserof (the married 9 y 1 the eciver in Shaft. The lever arm "controlishaft Land lonehaving a relatively @small is ipm ed f rllockinglthereceiver shaft 28 strokefiiorigoverning thegcontrol of theiselection 4-45 by loperative Llocking coaotion of .itsupper end qpgmfi ns q' ensing r ti i an twith lthe locking hear} .in attracted positionof hodiment nma'de in accordance with 117118 inven 791181" m f- '-The-WiIlding fi i l' ;;tion are accomplished :for rallvsymbol steps byV-a magnet l i -disposed in the telegraphic circuit, single selection armature 1L andzearei mechanically keepin the magn t energized, fits armature 2 distributed and itransformed to serve rthersetting r attracted, and :the receiver :shaft 278 ,is consevoriadiustmentizonthe;printerimeans.1 a fl e lywle k daagainstop ra ion. The .eircuit izrne objectnotedrabovegand additionalobiec s n fi u l f thep -pose 70f releasingihe rand; features .willzbevbrought-qoutzin'the:conrseof 1 7 Shaft \Qp and .upon "suchlinthe sdetailed =1 description of v saneembodiment 10f -.terrupt-ion the armature :2 releasesand L then-lock- 14116 invention, which willvbemresentlyrendered r iingeear-lfl isretracted atolrelease the lever-mm 7 members step. ll, whose extension I 4a attempts to follow the control curve of the cam 38, moves counterclockwise in the direction of the armature. .case the armature 3 is held incident to the first now execute one full revolution.' At the conclusion of such revolution the cam I I] engages the lower end 9 f the lever arm I and presses the armature 2 against the core of the receiver magnet I, as mentioned before. The locking ear 8 is thus positioned against the upper end of the lever arm II, which has meanwhile assumed the position shown in Fig. 4, due to the pull of the spring I3, and thus locks the receiver shaft against rotation at the conclusion of each revo lution.

The selection control arrangement,- essential elements of which are diagrammatically shown in Figs. 1 and 3, comprisesthe armature 3, the selection leverl l and five angular control levers II. ciated control member I8 by a. ball and-socket journal 23. The arms 3a and I id of the armature 3 and the lever It, respectively, and the right arms of the angular levers II are governed by the cams 2'9, 38 and 7LI7L5, respectively, all

of which are mounted on the receiver shaft 28. Being on the same shaft, these cams are arranged one in back of the other, as seen in Fig.1.

In order to indicate their structures more clearly, they have been shown in Fig. 2 separately, one

next to the other. The selection lever I l, which is pivoted on the shaft 2?, carries an ear I which is in normal position disposed in front of and slightly above the free end of the arm It extending from the armature 3. At its lower end the lever I4 carries a bar I9 (see also Fig. 3)

which governs the operation of the five control I 8. These members operate in the manner of tiltinglevers, each member actuating a generally T-shaped member 2 3 which engages a slot in its associated selection bar 25.

The arrangement explained above with reference to Figs. 1-3 operates as follows:

In resting position, and up to the sensing of the first symbol step, the selection armature 3 isjheld against the receiver magnet I by the cam 29. Depressions formed by the cam permit the armature to fall into release position for each Immediately thereafter the selection lever symbol step, the ear I5 of the lever I4 will pass freely adjacent the free end of the arm IIi extending from thearmature 3. However, if the armature has been released, the ear IE will encounter the extension I6 of the armature, since the latter is angularly clockwise displaced by the action of the spring 6, and the counterclockwise displacement of the lever I4 is thus intercepted and stopped. At the same time the first-one of the five control levers I! is displaced clockwise,

as seen in Fig. 1, by its cam M (Fig. 2) for the selection of the first symbol step, pulling its associated control member IS to the right. At the conclusion of this motion the edge 2I'of the control member I 8 glides along the pin 22, cancelling any previous displacement of the arm I8. During the return motion of the lever'II and therewith the control member I8, the lever I4 senses the position of the armature 3. The lever I4 leaves the position of the'control member I8 Each such lever is connected with its assorightby means of the bar I9.

4 unaltered if its ear I5 encounters the extension It in released position of the armature 3; but,

if the armature has remained attracted during positioninto which it was brought before actuation by the bar I9 and before engagement with the T-shaped member 24. The setting or adjustment operations for each of the remaining four arms I8 take place in similar manner. The levers II fall shortly before the conclusion of one revolution of the receiver shaft simultaneously into corresponding depressions in their, associated cams ill-7Z5 (Fig. 2) so that the lower arms of these levers I! continue the clockwise downward motion, each pressing its associated control member is more or less to theright or to the left, depending on its setting or adjustment. The lower ends of the members I8 are thus caused to coact with the right or left ends, respectively, of the associated T-shaped member as, thereby'correspondingly setting the coacting selectionbars25.

It will be seen from the foregoing explanations that the selection device requires only a small number of individual parts which may be made lightweight due to the relatively small forces which are effective for executing the selection operations. A working stroke of about 1 mm. will sufhce for the selection armature 3, and the pull of its restoring spring 6 may be on the order of about 25 grams. The release armature 2 may have, on the other hand, a stroke of about 5 mm, and the pull of its restoring spring 5 may be On the order of about 70 grams. Since the armature 2 is, duringthe entire selection operation, widely spaced from th core of the receiver magnet, due to its large working stroke, it remains to all practical purposes ineffective so that the full energy of the receiver magnet I is available for the actuation of the selection armature 3, thus requiring small current values for its en'- ergization.

A furtheradvantage of the new arrangement resides in its ready adaptability for use in a structure operating in accordance with the sixstep alphabet. All that is required for such use is merely an additional cam coacting with an associated control lever I I and a control member working stroke and said second armature having a relatively small working stroke, said first armature governing the operation of said control shaft by means comprising interlocking levers controlled therebyto release said control shaft for rotation through one revolution, and means operated by said control shaft at the conclusion of each revolution for pressingsaid first armature against the core of said magnet;' and said second armature governing the selection operations by means comprising a first arm extending therefrom for cooperation with a control cam on said control shaft which presses said armature against the core of said magnet during the revolution of said control shaft, a second arm extending from said second armature, a selection lever, a cam on said control shaft for causing said selection lever to move against said second arm, and interlocking means on said selection lever for coaction with said second arm whereby said selection lever is stopped in its displacement against said second arm by engagement therewith when said armature is in released position.

2. The arrangement and structure defined in claim 1, together with cam means carried by said control shaft for actuating the armature which governs said selection operations, said cam means forming depressions, one for the sensing of each symbol step, to cause said armature when in released position to follow successively thereinto during the rotation of said control shaft.

3. The arrangement and structure defined in claim 1, together with a plurality of selection bars, an operating member for each selection bar, and an actuating bar carried by said selection lever for operatively actuating said selection bars.

4. The arrangement and structure defined in claim 1, together with a plurality of selection bars. an operating member for each selection bar, an actuating bar carried by said selection lever for operatively actuating said selection bars,

a lever for each operating member, and cam means carried by said control shaft for placing each such lever into preparatory position in accordance with a predetermined symbol step.

5. The arrangement and structure defined in claim 1, together with a plurality of selection bars, an operating member for each selection bar, an actuating bar carried by said selection lever for operatively actuating said selection bars, a lever for operatively affecting each operating member, and a common actuating bar for all operating members, whereby each operating member assumes one of two positions depending on its actuation by its associated lever alone or in conjunction with said actuating bar.

6. The arrangement and structure defined in claim 1, together with a plurality of selection bars, an operating member for each selection bar, an actuating bar carried by said selection lever for operatively actuating said selection bars, a lever for each operating member, and cam means carried by said control shaft for placing each such lever into preparatory position in accordance with a predetermined symbol step, said cam means being constructed and arranged to impart to said levers an additional motion prior to the conclusion of a revolution of said control shaft lever for operatively actuating said control members, a lever for each control member, cam means carried by said control shaft for placing each such lever into preparatory position in accordance with a predetermined symbol step, each operating member carrying two extensions for selective coaction with a T-shaped member carried by the associated selection bar.

8. The arrangement and structure defined in claim 1, together with a plurality of selection bars, a generally T-shaped operating member for each selection bar, a control member for each operating member, an actuating bar carried by said selection lever for operatively actuating said control members, a lever for each control member, and cam means carried by said control shaft for placing each such lever into preparatory position in accordance with a predetermined symbol step, each control member carrying two extensions for selective coaction with the coacting T-shaped operating member carried by the associated selection bar, whereby each selection bar is actuated or retained in normal position, depending on the position of said extension of the associated control member.

9. The arrangement and structure defined in claim 1, together with a plurality of selection bars, an operating member for each selection bar, an actuating bar carried by said selection lever for operatively actuating said selection bars, and a ball-and-socket joint for journalling each selection bar for coaction with its associated operating member.

HERBERT WUSTENEY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,800,973 Wusteney Apr. 14, 1931 FOREIGN PATENTS Number Country Date 894,070 France Mar. 6, 1944 

